Time Sieve + Tamiyo's Journal + Academy Manufactor + Phantasmal Image

Time Sieve

Tamiyo's Journal

Academy Manufactor

Phantasmal Image

How it works

1. At the beginning of your upkeep, Tamiyo's Journal triggers, creating three Food, three Clue, and three Treasure tokens.
2. Activate Time Sieve by tapping it and sacrificing five artifacts, causing you to take an extra turn after this one.
3. Repeat each turn.

This ingenious loop transforms your upkeep into an unstoppable engine for infinite turns, legal across Commander, Legacy, Modern, Oathbreaker, and Vintage. The magic begins when Tamiyo's Journal triggers at the start of your turn, but instead of a single Clue, Academy Manufactor turns that single token creation into a massive windfall of three Clues, three Foods, and three Treasures. With this sudden bounty of nine artifacts, you easily have enough fuel to tap Time Sieve and sacrifice five of them to take an extra turn. Meanwhile, Phantasmal Image can enter the battlefield as a copy of Academy Manufactor to supercharge your token generation even further, ensuring you never run out of sacrifices.